linux/arch/mips/lasat/reset.c
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   1/*
   2 * Thomas Horsten <thh@lasat.com>
   3 * Copyright (C) 2000 LASAT Networks A/S.
   4 *
   5 *  This program is free software; you can distribute it and/or modify it
   6 *  under the terms of the GNU General Public License (Version 2) as
   7 *  published by the Free Software Foundation.
   8 *
   9 *  This program is distributed in the hope it will be useful, but WITHOUT
  10 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 *  for more details.
  13 *
  14 *  You should have received a copy of the GNU General Public License along
  15 *  with this program; if not, write to the Free Software Foundation, Inc.,
  16 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  17 *
  18 * Reset the LASAT board.
  19 */
  20#include <linux/kernel.h>
  21#include <linux/pm.h>
  22
  23#include <asm/reboot.h>
  24#include <asm/system.h>
  25#include <asm/lasat/lasat.h>
  26
  27#include "picvue.h"
  28#include "prom.h"
  29
  30static void lasat_machine_restart(char *command);
  31static void lasat_machine_halt(void);
  32
  33/* Used to set machine to boot in service mode via /proc interface */
  34int lasat_boot_to_service;
  35
  36static void lasat_machine_restart(char *command)
  37{
  38        local_irq_disable();
  39
  40        if (lasat_boot_to_service) {
  41                *(volatile unsigned int *)0xa0000024 = 0xdeadbeef;
  42                *(volatile unsigned int *)0xa00000fc = 0xfedeabba;
  43        }
  44        *lasat_misc->reset_reg = 0xbedead;
  45        for (;;) ;
  46}
  47
  48static void lasat_machine_halt(void)
  49{
  50        local_irq_disable();
  51
  52        prom_monitor();
  53        for (;;) ;
  54}
  55
  56void lasat_reboot_setup(void)
  57{
  58        _machine_restart = lasat_machine_restart;
  59        _machine_halt = lasat_machine_halt;
  60        pm_power_off = lasat_machine_halt;
  61}
  62